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Which of the following is the multiple access protocol for channel access control?(a) CSMA/CD(b) CSMA/CA(c) Both CSMA/CD & CSMA/CA(d) HDLCI had been asked this question in an online interview.I want to ask this question from Data Link Layer topic in chapter OSI Model of Computer Network

Answer»

The correct answer is (c) Both CSMA/CD & CSMA/CA

For explanation: In CSMA/CD, it DEALS with detection of collision after collision has occurred, whereas CSMA/CA deals with PREVENTING collision. CSMA/CD is abbreviation for Carrier Sensing MULTIPLE ACCESS/Collision detection. CSMA/CA is abbreviation for Carrier Sensing Multiple Access/Collision Avoidance. These protocols are used for efficient multiple channel access.



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